1 files changed, 157 insertions, 0 deletions
diff --git a/src/ui/tools/freehand-base.h b/src/ui/tools/freehand-base.h
new file mode 100644
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--- /dev/null
+++ b/src/ui/tools/freehand-base.h
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_DRAW_CONTEXT_H
+#define SEEN_SP_DRAW_CONTEXT_H
+
+/*
+ * Generic drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <memory>
+#include <optional>
+
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+#include "live_effects/effect-enum.h"
+
+class SPCurve;
+class SPCanvasItem;
+
+struct SPDrawAnchor;
+
+namespace Inkscape {
+    class CanvasItemBpath;
+    class Selection;
+}
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum shapeType { NONE, TRIANGLE_IN, TRIANGLE_OUT, ELLIPSE, CLIPBOARD, BEND_CLIPBOARD, LAST_APPLIED };
+
+class FreehandBase : public ToolBase {
+public:
+    FreehandBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename);
+    ~FreehandBase() override;
+
+    Inkscape::Selection *selection;
+
+    bool attach;
+
+    guint32 red_color;
+    guint32 blue_color;
+    guint32 green_color;
+    guint32 highlight_color;
+
+    // Red - Last segment as it's drawn.
+    Inkscape::CanvasItemBpath *red_bpath;
+    std::unique_ptr<SPCurve> red_curve;
+    std::optional<Geom::Point> red_curve_get_last_point();
+
+    // Blue - New path after LPE as it's drawn.
+    Inkscape::CanvasItemBpath *blue_bpath;
+    std::unique_ptr<SPCurve> blue_curve;
+
+    // Green - New path as it's drawn.
+    std::vector<Inkscape::CanvasItemBpath *> green_bpaths;
+    std::unique_ptr<SPCurve> green_curve;
+    std::unique_ptr<SPDrawAnchor> green_anchor;
+    gboolean green_closed; // a flag meaning we hit the green anchor, so close the path on itself
+
+    // White
+    SPItem *white_item;
+    std::list<std::unique_ptr<SPCurve>> white_curves;
+    std::vector<std::unique_ptr<SPDrawAnchor>> white_anchors;
+
+    // Temporary modified curve when start anchor
+    std::unique_ptr<SPCurve> sa_overwrited;
+
+    // Start anchor
+    SPDrawAnchor *sa;
+
+    // End anchor
+    SPDrawAnchor *ea;
+
+
+    /* Type of the LPE that is to be applied automatically to a finished path (if any) */
+    Inkscape::LivePathEffect::EffectType waiting_LPE_type;
+
+    sigc::connection sel_changed_connection;
+    sigc::connection sel_modified_connection;
+
+    bool red_curve_is_valid;
+
+    bool anchor_statusbar;
+    
+    bool tablet_enabled;
+
+    bool is_tablet;
+
+    gdouble pressure;
+    void set(const Inkscape::Preferences::Entry& val) override;
+
+protected:
+    bool root_handler(GdkEvent* event) override;
+};
+
+/**
+ * Returns FIRST active anchor (the activated one).
+ */
+SPDrawAnchor *spdc_test_inside(FreehandBase *dc, Geom::Point p);
+
+/**
+ * Concats red, blue and green.
+ * If any anchors are defined, process these, optionally removing curves from white list
+ * Invoke _flush_white to write result back to object.
+ */
+void spdc_concat_colors_and_flush(FreehandBase *dc, gboolean forceclosed);
+
+/**
+ *  Snaps node or handle to PI/rotationsnapsperpi degree increments.
+ *
+ *  @param dc draw context.
+ *  @param p cursor point (to be changed by snapping).
+ *  @param o origin point.
+ *  @param state  keyboard state to check if ctrl or shift was pressed.
+ */
+void spdc_endpoint_snap_rotation(ToolBase* const ec, Geom::Point &p, Geom::Point const &o, guint state);
+
+void spdc_endpoint_snap_free(ToolBase* const ec, Geom::Point &p, std::optional<Geom::Point> &start_of_line, guint state);
+
+/**
+ * If we have an item and a waiting LPE, apply the effect to the item
+ * (spiro spline mode is treated separately).
+ */
+void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item);
+
+/**
+ * Create a single dot represented by a circle.
+ */
+void spdc_create_single_dot(ToolBase *ec, Geom::Point const &pt, char const *tool, guint event_state);
+
+}
+}
+}
+
+#endif // SEEN_SP_DRAW_CONTEXT_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :